Yes, and in Huntley the planning rules leave you more room than most buyers expect. No conservation area covers the village. The listed buildings would fit on a single sheet of paper. Most homes went up after the war. The thing most likely to stop your extension is your budget.
Historic England lists 11 buildings in Huntley. All 11 are Grade II, and there are no Grade I or Grade II* buildings in the village. Listing means any alteration that affects a building's character needs listed building consent, inside or out, so the owners of those 11 face a slower process and more paperwork. The other houses in the village are judged under the ordinary planning rules. The village is in the Domesday Book as Huntelei, and almost none of that history has left rules behind for today's homeowners.
The planning record shows people here making full use of that freedom. The council's register logged 543 applications for the area between April 2024 and June 2026, 240 of them in the last twelve months. That volume tells you people in and around Huntley alter their homes as a matter of course. It says nothing about how many applications were approved. Most of Huntley was built between 1951 and 1980, and a lot of what was built then is now being rebuilt bit by bit.
In practice, a house that is not listed and not in a conservation area works under the standard householder rules. Some modest extensions and alterations fall within permitted development and need no full application, while anything larger goes to Forest of Dean District Council for planning permission in the usual way. The catch on post-war estates is the original planning consent, which sometimes removed permitted development rights when the houses were built. Ask the council for the planning history of the house you are buying, because that decides whether your extension starts with a builder or with an application.
Freedom to extend or alter a home is one of Huntley's real strengths, with only a small number of listed buildings and no conservation area to restrict what the rest can do.